Samuelson, P. A., & Skidmore, F. (1970). Readings in economics (6a. ed.). McGraw-Hill.
Chicago Style (17th ed.) ZitazioaSamuelson, Paul Anthony, eta Felicity Skidmore. Readings in Economics. 6a. ed. Nueva York: McGraw-Hill, 1970.
MLA (9th ed.) ZitazioaSamuelson, Paul Anthony, eta Felicity Skidmore. Readings in Economics. 6a. ed. McGraw-Hill, 1970.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.